@jtsnead, I can say I have had none of the issues with the VPI you mentioned. Found it to be relatively easy to set up and experience no feedback whatsoever. Agree on the Soundsmith accessory tho, helps with fine tuning azimuth and tracking force. I do not have the 3D arm so cannot comment but the 10.5 arm suits me just fine. No need for the 2nd pivot. No woofer pumping etc either.
Again not plugging, just my personal experience